KR960029302A - How to prepare diacerane - Google Patents

How to prepare diacerane Download PDF

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KR960029302A
KR960029302A KR1019950001499A KR19950001499A KR960029302A KR 960029302 A KR960029302 A KR 960029302A KR 1019950001499 A KR1019950001499 A KR 1019950001499A KR 19950001499 A KR19950001499 A KR 19950001499A KR 960029302 A KR960029302 A KR 960029302A
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diacerane
producing
reaction mixture
dimethylacetamide
crystallization
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KR1019950001499A
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KR100362224B1 (en
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디 나폴리 기도
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디 나폴리 기도
라보라뚜와르 메디동 에스 에이
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C46/00Preparation of quinones

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  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

본 발명은 디아세레인으로 알려진 1,8-디아세톡시 -3-카르복시안드라퀴논의 제조방법에 관한 것으로, 본 방법은 알로인을 아세틸화제로 처리하여 아세틸화된 생성물을 얻는 단계, 아세틸화된 생성물을 산화제로 처리하여 생 디아세레인을 얻는 단계 및 생 디아세레인을 정제하는 단계로 구성되며 특히 생 디아세레인을 정제하는 과정에 있어 2-메톡시에탄올 또는 N,N-디메틸아세트아미드로부터의 결정화 및 선택적으로 트리에틸아민으로 처리하는 조염단계등으로 정제하는 방법을 이용함으로써 특히 알로에-에모딘과 같은 불순물이 없는 순도 높은 디아세레인을 고수율로 제조할 수 있다.The present invention relates to a process for the preparation of 1,8-diacetoxy-3-carboxydraquinone, known as diacerane, which process comprises treating aloin with an acetylating agent to obtain an acetylated product, acetylated Treating the product with an oxidant to obtain live diacerane and purifying the raw diacerane, in particular from 2-methoxyethanol or N, N-dimethylacetamide in the process of purifying raw diacerane. By using a method such as crystallization and optionally a salt-treatment step of treating with triethylamine, a high-purity diacerane can be produced in a high yield, especially without impurities such as aloe-emodin.

Description

디아세레인의 제조방법How to prepare diacerane

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims (12)

하기 구조식(Ⅰ)을 갖는 1,8-디아세톡시-3-카르복시안드라퀴논의 제조방법에 있어서,In the method for producing 1,8-diacetoxy-3-carboxyandraquinone having the following structural formula (I), (Ⅰ) (Ⅰ) (1) 염기하 또는 촉매인 산존재하에서 하기 구조식(Ⅱ)의 알로인을 비활성 희석제내에서 아세틸화제로 처리하여 하기 구조식(Ⅲ)의 상응하는 아세틸화된 생성물을 얻는 단계,(1) treating the alloin of formula (II) with an acetylating agent in an inert diluent in the presence of a base or in the presence of a catalyst in an inert diluent to obtain the corresponding acetylated product of formula (III), (Ⅱ) (Ⅱ) (Ⅲ) (Ⅲ) (2) 아세틸화된 생성물(Ⅲ)을 산화제로 처리하여 생 디아세레인을 얻는 단계 및 (3) 생 디아세레인을 정제하는 단계를 포함하며, 상기 디아세레인의 정제는 2-메톡시에탄올로부터의 결정화 및 N,N-디메틸아세트아미드로부터의 결정화로 구성되는 군에서 선택되는 정제 단계 및 할로겐화된 탄소수소용매내에 용해된 디아세리인을 트리에틸아민으로 처리하여 염을 생성시키고 불용성 잔유물을 제거후 산성수용액 매체에서 디아세레인을 침전시켜 회수하고 침전된 디아세리인을 건조시키는 것을 포함하는 선택적인 조염단계에 의해 수행됨을 특징으로 하는 디아세레인의 제조방법.(2) treating the acetylated product (III) with an oxidizing agent to obtain live diacerane, and (3) purifying the raw diacerane, wherein the purification of the diacerein is 2-methoxyethanol. Purification step selected from the group consisting of crystallization from and crystallization from N, N-dimethylacetamide and diaceridine dissolved in halogenated carbonaceous solvents are treated with triethylamine to generate salts and remove insoluble residues. And then recovering the precipitated diacerane in an acidic aqueous medium, followed by a selective salting step comprising drying the precipitated diacerine. 제1항에 있어서, 산화단계(2)로부터 얻어진 생 디아세레인은 할로겐화된 용매인 메틸렌 클로라이드를 사용하는 상기조염단계에 의해 1차로 정제되고, 다음에 2-메톡시에탄올로부터의 결정화에 의해 정제되고, 마지막으로 무수 N,N-디메틸아세트아미드로부터의 결정화에 의해 정제됨을 특징으로 하는 디아세레인의 제조방법.The raw diacerane obtained from the oxidation step (2) is firstly purified by the above salting step using methylene chloride which is a halogenated solvent, and then by crystallization from 2-methoxyethanol. And, finally, purified by crystallization from anhydrous N, N-dimethylacetamide. 제1항에 있어서, 할로겐화된 용매인 메틸렌클로라이드가 사용되고 트리에틸아민이 디아세레인의 1몰당 내지 1.3몰의 양으로 사용되며, 조염단계가 15℃ 내지 30℃의 온도에서 수행되고, 진한 농도의 염산 수용액을 1몰 첨가함으로써 산성수용액 매체에서 디아세레인이 침전되는 것을 특징으로 하는 디아세레인의 제조방법.The halogenated solvent of methylene chloride is used and triethylamine is used in an amount of 1 to 1.3 moles of dicerane, and the salt forming step is carried out at a temperature of 15 ° C to 30 ° C, A method for producing diacerene, wherein diacerene is precipitated in an acidic aqueous medium by adding 1 mol of an aqueous hydrochloric acid solution. 제1항에 있어서, 아세틸화제가 아세트산 무수물이고, 염기하 또는 촉매인 산존재하에서 아세틸화가 30℃ 내지 150℃의 온도에서 수행되고, 산화제는 0℃ 내지 100℃의 온도에서 빙초산내에서 사용되는 크롬산 무수물임을 특징으로 하는 디아세레인의 제조방법.The chromic acid according to claim 1, wherein the acetylating agent is acetic anhydride, the acetylation is carried out at a temperature of 30 ° C to 150 ° C in the presence of a base or in the presence of a catalyst, and the oxidizing agent is used in glacial acetic acid at a temperature of 0 ° C to 100 ° C. A method for producing diacerane, characterized in that it is anhydride. 제1항에 있어서, 아세틸화제는 소디움 아세테이트의 존재하에서 희석제로서 사용되는 과량의 아세트산 무수물이고, 반응온도는 반응혼합물의 끓는 온도임을 특징으로 하는 디아세레인의 제조방법.The method of claim 1, wherein the acetylating agent is an excess of acetic anhydride used as a diluent in the presence of sodium acetate and the reaction temperature is the boiling temperature of the reaction mixture. 제5항에 있어서, 소디움 아세테이트의 양은 알로인에 대하여 몰 비율로 1% 내지 10%임을 특징으로 하는 디아세레인의 제조방법.The method of claim 5, wherein the amount of sodium acetate is 1% to 10% in molar ratio with respect to alloin. 제4항에 있어서, 크롬산 무수물이 출발 알로인 1몰당 5몰 내지 15몰의 양으로 사용되는 것을 특징으로 하는 디아세레인의 제조방법.5. The process for producing diacerane according to claim 4, wherein the chromic anhydride is used in an amount of 5 to 15 moles per mole of starting aloe. 제7항에 있어서, 크롬산 무수물이 출발 알로인 1몰당 7몰 내지 9몰의 양으로 사용되고 반응온도는 20℃ 내지 70℃의 범위임을 특징으로 하는 디아세레인의 제조방법.8. The process for producing diacerane according to claim 7, wherein the chromic anhydride is used in an amount of 7 mol to 9 mol per mol of the starting alloline and the reaction temperature is in the range of 20 캜 to 70 캜. 제1항에 있어서, 반응혼합물의 산화가 아세틸화된 중간체를 단리시키지 않고, 아세틸화 단계로부터 얻어진 반응혼합물 상에서 이루어짐을 특징으로 하는 디아세레인의 제조방법.The process for preparing diacerane according to claim 1, wherein the oxidation of the reaction mixture is carried out on the reaction mixture obtained from the acetylation step without isolating the acetylated intermediate. 제9항에 있어서, 아세틸화로부터 얻어진 반응혼합물은 여과되고 60℃~70℃에서 크롬산 무수물 및 빙초산을 포함하는 혼합수(반응매체에 존재하는 아세트산 무수물의 화학량론적 양을 초과하지 않는 양으로)를 반응혼합물에 첨가하는 것을 특징으로 하는 디아세레인의 제조방법.10. The reaction mixture of claim 9, wherein the reaction mixture obtained from acetylation is filtered and the mixed water comprising chromic anhydride and glacial acetic acid (in an amount not exceeding the stoichiometric amount of acetic anhydride present in the reaction medium) at 60 ° C to 70 ° C. Method for producing a dicerane, characterized in that it is added to the reaction mixture. 제1항에 있어서, 디아세레인을 무수 N,N-디메틸아세트아미드로 연속 3번 결정화시키며 선택적으로 아세트산 무수물과 혼합하여 수행하는 것을 특징으로 하는 디아세레인의 제조방법.The method of claim 1, wherein the diacerane is crystallized three times in succession with anhydrous N, N-dimethylacetamide and optionally mixed with acetic anhydride. 제11항에 있어서, N,N-디메틸아세트아미드로의 연속 3번 결정화는 무수 N,N-디메틸아세트아미드 및 아세트산 무수물을 400 대 6의 중량비율로 혼합사용함으로 수행되고, 그 후 최고 5%의 수분함량을 갖는 에탄올로 결정화시키는 것을 특징으로 하는 디아세레인의 제조방법.12. The process of claim 11 wherein three successive crystallizations to N, N-dimethylacetamide are carried out by mixing anhydrous N, N-dimethylacetamide and acetic anhydride in a weight ratio of 400 to 6, after which up to 5% Method for producing a dicerane, characterized in that the crystallization with ethanol having a water content of. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950001499A 1995-01-27 1995-01-27 How to make diacerane KR100362224B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100715076B1 (en) * 2005-06-10 2007-05-04 대화제약 주식회사 A new process for producing diacerhein

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100715076B1 (en) * 2005-06-10 2007-05-04 대화제약 주식회사 A new process for producing diacerhein

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